如何通过调用外部端点创建返回responseentity的端点

@RestController
public class MyController {
    private RestTemplate restTemplate;

    public MyController(RestTemplate restTemplate) {
        this.restTemplate = restTemplate;
    }

    @GetMapping("/endpoint")
    public ResponseEntity<String> callExternalEndpoint() {
        String url = "http://external-api.com/endpoint";
        ResponseEntity<String> response = restTemplate.getForEntity(url, String.class);
        return response;
    }
}

@RestController
public class MyController {
    private WebClient webClient;

    public MyController(WebClient.Builder webClientBuilder) {
        this.webClient = webClientBuilder.build();
    }

    @GetMapping("/endpoint")
    public Mono<ResponseEntity<String>> callExternalEndpoint() {
        String url = "http://external-api.com/endpoint";
        return webClient.get()
                .uri(url)
                .retrieve()
                .toEntity(String.class);
    }
}